Drilling my Zbar??
Before you rip and tear, does your pedal system look like the article system?
What else can get me the extra throw needed to depress my clutch better??
Assuming a B&B style cover (3 finger).
Make sure the linkage tight.
Bell crank basically straight across in any view.
Verify your fork pivot isn't bent over, cracked, loose, or severely worn.
Fork tips not worn out or bent.
Re-assemble and work the motion with the pedal while someone watches for deflection or loss motion in the linkage throughout the travel.
Determine if your release bearing length is correct. How far off the fingers does the bearing sit with the pedal up and the fork spring installed?
A refaced flywheel can be spaced back to original position.
A clutch cover finger out of adjustment .040" is another .040" more travel needed to release the disc.
A worn engine thrust bearing can also contribute to travel issues.